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Railways Sample Paper RRBs Assistant Loco Pilot and Technician CBT STAGE-I Sample Paper-12

  • question_answer
    Which number will be placed at the sign of interrogation?

    A)  20                   

    B)  25  

    C)  26       

    D)  75

    Correct Answer: C

    Solution :

    \[{{(2)}^{2}}+{{(4)}^{2}}=4+16=20\] and\[{{(3)}^{2}}+{{(9)}^{2}}=9+81=90\] \[\therefore \] \[{{(1)}^{2}}+{{(5)}^{2}}=1+25=(26)=?\]


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